Troubleshooting - ITT M05430 Directives D'installation Et D'utilisation

Troubleshooting

Troubleshooting
DISCONNECT AND LOCKOUT ELECTRICAL POWER BE-
WARNING
FORE ATTEMPTING ANY SERVICE. FAILURE TO DO SO CAN
CAUSE SHOCK, BURNS OR DEATH.
Hazardous voltage
can shock, burn or
cause death.
Symptom
PUMP MOTOR
NOT RUNNING
LITTLE OR
NO LIQUID
DELIVERED
BY PUMP
22
Probable Cause
1. Motor thermal protector tripped
a. Incorrect control box
b. Incorrect or faulty electrical
connections
c. Faulty thermal protector
d. Low voltage
e. Ambient temperature of control
box/starter too high
f. Pump bound by foreign matter
g. Inadequate submergence
2. Open circuit breaker or blown fuse
3. Power source inadequate for load
4. Power cable insulation damage
5. Faulty power cable splice
1. Faulty or incorrectly installed
check valve
2. Pump air bound
3. Lift too high for pump
4. Pump bound by foreign matter
5. Pump not fully submerged
6. Well contains excessive amounts
of air or gases
7. Excessive pump wear
8. Incorrect motor rotation
– three phase only.
Recommended Action
1. Allow motor to cool, thermal
protector will automatically reset
a – e. Have a qualified electrician
inspect and repair, as required
f. Pull pump, clean, adjust set
depth as required
g. Confirm adequate unit
submergence in pumpage
2. Have a qualified electrician inspect
and repair, as required
3. Check supply or generator capacity
4 – 5. Have a qualified electrician
inspect and repair, as required
1. Inspect check valve, repair as
required
2. Successively start and stop pump
until flow is delivered
3. Review unit performance, check
with dealer
4. Pull pump, clean, adjust set depth
as required
5. Check well recovery, lower pump
if possible
6. If successive starts and stops does
not remedy, well contains excessive
air or gases
7. Pull pump and repair as required
8. Reverse any two motor electrical
leads